VS 2008 : Read Access Database From Within 64-bit App
Oct 17, 2010
I am creating a drawing manager, to be run inside 64-bit AutoCAD. From what I have read, there is no 64-bit version of the msjet40.I thought was going to be successful was to build the class as a 32-bit, but I still get the error. is there a way that I can read an access database from withing a 64-bit app?
i am trying to read from access database and that work with data in a program. I used to work with VB from previous version and now it seems to me there are differencies. If someone can paste a working simple code.I would like to make a windows form aplication.
There is an OLE object column that contains images in my access database. I'm trying to create a program that reads the images from that ole column and store the images to a file. Currently, I have a program that creates an image file but the image is blank.[code]
I am working on code in Visual Basic 2010 that will read from an Access 2007 data table. If the row has one of the fields marked as processed then do nothing with it, but it not, then process the data in that record, and update the field as processed, and move on to the next one marked as needing processing, looping through all of them. Later I'll go back and repeat this again.
I am able to read from the database and get all the information from it just fine, but I can't then update the 'processed' field. I'd rather like to avoid having the database integrated with the project as other processes will need to access it when this process (program) is not working on it.
I am a Visual Basic Programmer and presently migrating our applications to Vb.netQuestion : I need to access the records from a MS Access database to the Text box or for some user login validation using vb.netso i coded to give a message box if any row is returned by the connection.but its not all selecting any rows even though i queried as "Select * from <Table Name>"also i am unable to debug it.....I am attaching th code snippet used along with this mail.plz revert back if there is a solution.[code...]
I am brand new to VB. I am using VB 2010 Express. I have a MS Access database and can read & display the data. However, when I enter a line of code to manipulate the data I get a "read only" error message in the project editor. I have checked the file and directory structures from windows and the command prompt. I have even used the "attrib" command to make sure the file was not read only. Then I put the following code in the form and it dispaly the read only message.
Dim infoReader As System.IO.FileInfo infoReader = My.Computer.FileSystem.GetFileInfo("C:zzz-devaccesswhitneywhitney.accdb") If infoReader.IsReadOnly = True Then MsgBox("File is readonly!") End If
I am using the VB 2010 Express DataSource to connect to the MS Access database and not a connection string in the program.
i've download the 101 Visual Basic and C# Code Samples from downloads/details.aspx?familyid=08E3D5F8-033D-420B-A3B1-3074505C03F3&displaylang=en i was going to learn "VB.NET - Data Access - Read and Write Images from a Database" from that 101. the program is written in 2003 the conversion of the problem to 2005 and 2008 failed.
So I have a database in Microsoft Access (its path is c:database.mdb). There are two tables. Table1 and Table2. I would like to read each row of Table1 to an array, and write a row to Table2.
I have looked all over google, but I couldn't find anything that worked.
I'm using a OleDB connection to a access database. I'm entering a row into the database to set some user preferences. What i need to get is get back the row ID of the row I just entered. I'm more familiar with PHP and with PHP I use use this entry
I read a decimal datum from my database and ask the debugger what I got:?
reader.Item(idxItem) 0D {Decimal} Decimal: 0DI want to convert it to a string because I am building an output record.? CSTR(reader.Item(idxItem)) "0.0000"I don't want four decimal places so I try to be more specific:? STRING.format(reader.Item(idxItem), "0.00") "0.0000" {String} String: "0.0000"How do I get 0.00? And if my input is 90.5, I want 90.50.
The first problem I have now is how to add all the data to the combobox from access 2007? [I have solved this myself accidentally.]
The second problem I have is I cannot save the primary key.
Assume that I have these: Table name: tCustomer Fields: ID Datatype [Text]
[Code]....
Now, the user fills in the form. The ID cannot be edited by them where it's automatically counts the number of customer in database and give the id. For example, I already have 3 customers in the database so when I add new Customer, it will be 4 for the ID.
When I click save, it shows me the message of "Index or primary key cannot contain a Null value." I have set an input mask for my Customer. So, can I make it to save in a format like CT001, CT002, CT003 automatically?
i am a beginner level member of vs2008i had create a interface. In Daily Transec.vb form i cant insert, edit, delete, go prev and net data. already i had created a localdatabase as "Expense"need you help to complete itso this is request to u that plz chk the link file and complete the DailyTran.vb form. nothing else
I am trying out the Visual Studio 2008 Standard Edition Setup and Deployment - Setup Wizard on a very simple VB 2008 app which includes a simple SQL Express dB. The build works fine and it installs on the target system ok. But when I go to run the application and add a new record for example, I get a "read-only" error indicating that the sql db is read-only. Yet none of the files in the folder are read-only. What is odd is that the folder that it was installed into "acts" like it is read only, yet it is not identified as such. If I move the .exe and db files out of that folder, (onto the desktop for example) it works just fine. Should I set up a post build event or something to make
I'm trying to to connect to a Oracle database and read the content to a textbox. This is my
Dim conn As OdbcConnection Dim connectionString As String Try
[code]....
Connection is ok, (I think) Connection Open shows in textbox, and no errors. But I get a nullexeption on the reader, it has not been assign a value. Don't know what to do next.
I can save my data to access database and in the access database field I set it to date/time.But problem is when I get the value out from the database.. the format is always month/day/year hour:minutes:seconds example today: 5/2/2011 12:00:00..How to get the value into listview becoming May/2/2011 without the hour..Here's my code to get it from database ListView1.Items(i).SubItems.Add(dt.Rows(i)(14).ToString).The second problem is.When I would like to edit, how can the datetimepicker get the listview value ? [code] info: using access 2003 (.mdb) the Date of Birth field has been set into Date/Time.
I am looking at Visual Basic 2008 Step By Step. I need to read a flat file and insert the records into my SQL database. My code so far:
[Code]...
The INPUT line needs to be fixed. From what I can see, I need to move it all to a single field and use a split to parse it, correct? As I look at the entries on this site, all the code seems to use stream readers. Why would the book not do that? Am I missing something?
I have spent several hours trying to delete a row and insert a row into an Access database using the OLEDBDataadapter and dataSets without any success. I don't get any errors it just doesn't update the datatable. Here is the last version of the code I have been trying to get to work. I have done a lot of searching and have
Data save Private Sub SaveNumDte(ByVal ltoNum As String, ByVal ltoDate As Date) Dim numTotal, x, MaxRows As Integer
Is it possible to set a variable in my custom class for Private Read/Write access and Public Readonly access without creating Properties with Get and Set? In other words, from within my class I want full access and from my form I only want read access. Right now I declare my variable as either Private or Public to control Public read/write access. I tried googling my question a bit but I'm not sure what the correct terms even ar
I have an application that has an Ms Access 2007 DataBase which runns great if access is installed. Is there any code that I can use in vb that I would be able to run access with out installing it.
details: application:vb.net 2008 database:ms access2007 32bit OS vista
actually what the problem is my project is working fine with windows vista in all the systems my other teams members are using 64 bit windows7 in windows 7 projects runs but couldn;t able to connect with database not able to save the data.
I made a Microsoft Access Database on my old computer and it worked fine with vb 2008When i try to go to my form containing the tables from Microsoft access, I get this message
My problem does not seem to be the same as in other links. I'm trying to teach myself VB 2008 and I want to connect to an Access MDB file. I follow the instructions in all the different books and websites. I start a new project, choose a new data connection, change the type to Microsoft Access and browse for the file. When I get the connection string I press "Test Connection" and it's okay. I then drag either the entire table or just a field to the form. I use Data Preview Data and can see all the rows and columns and the data, so I know the connection has been made. however, when I press F5 I get a form, but no data and it says "0 records of 0".
I accessed the code and put a MsgBox before and after the "Fill" statement. The one before pops up, but the second one (below Fill) does not. I also get "A first chance exception of type 'System.InvalidOperationException' occurred in System.Data.dll" in the Immediate Window. I have tried putting a "Try" statement around the code and in this case it will go to the second MsgBox, but still no data.
I'm following what seems to be the most basic and simple method, but I cannot get data in my form.